NLopt.optimize returns a tuple (objvalue, xopt, flag)
, and flag is a symbol that can hold strings such as FTOL_REACHED or SUCCESS. The C API mentions that positive return values indicate success. Is there a similar way to test for success or failure with the Julia package? I can’t figure out how to get beyond a string, which I obtain using println("$flag")
. I don’t see how to find an associated numerical value.
You can see the return codes here:
but unfortunately NLopt returns a Symbol
instead of the enum:
So you probably just need to deal with each of the possible return values.
Or something like
is_success(ret::Symbol) = ret == :SUCCESS || endswith("$ret", "_REACHED")
Thanks, I will use this option.
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